Barber&#39;s chair.



C. W. FISCHER & C. ZIMMERMAN.

BARBER/S CHAIR.

APPLICATION FILED MAR. 21, 1904.

947,380. Patented Jan. 25, 1910.

3 SHEETS-SHEET 1.

O. W. FISCHER & C. ZIMMBRMAIL BABBEE'S CHAIR. rum-non rILnn MAR. 21, m4.

Patented Jan. 25, 1910.

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.0. W. FISCHER & C. ZIMMERMAN.

BARBEB'S OHAIR.

urmcnmn rum) Mum. 1904.

947,380. Patented Jan. 25,1910.

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UNITED OFFICE.

CHARLES W. FISCHER AND CHARLES ZIMMERMAN, OF CHICAGO, ILLINOIS,ASSIGNORS TO THEO. A. KOCHS COMPANY, OF CHICAGO, ILLINOIS, A CORPORATIONOF ILLINOIS.

BARBER/S CHAIR.

Specification of Letters Patent.

Patented Jan. 25, 1910.

To all whom 'it may concern:

Be it known that we, CHARLES IV. Fisorinn and CHARLES ZIMMERMAN,citizens of the United States, and residents of Chicago, in the countyof Cook and State of Illinois, have invented certain new and usefulImprovements in Barbers Chairs, of which the following is aspecification, reference being had to the accompanying drawings.

Our invention relates to barber's chairs, and has especially to do withthe mechanism for controlling the various adjustments common to suchchairs,-that is to say, the rotation of the chair about a vertical axisand the adjustment of the back, arms, and foot-rest.

It also has to do with the vertical adj ustment of the chair, in that itprovides for preventing the plunger which supports the chair-seat frombeing driven up out of the base.

The objects of our invention are to provide a new and improved barber'schair, by which the rotation of the chair and the position of the back,arms, and foot-rest may be controlled by a single lever; to provideimproved locking-devices for securing the chair-seat against rotation;and also to provide means by which accidental excessive upward movementof the chair-seat plunger may be prevented. lVe accomplish these objectsas illustrated in the drawings and as hereinafter described.

\Vhat we regard as new is set forth in the claims.

In the accompanying drawings,-Figure 1 is a side elevation of ourimproved chair, the base and some parts of the seat being in section;Fig. 2 is a partial section on line 2-2 of Fig. 1; Fig. 3 is ahorizontal section on line 33 of Fig. 1; Fig. 4. is a partialfrontelevation of the chair; Fig. 5 is a section on line 5 5 of Fig. 3;Fig. 6 is an enlarged sectional view,also taken on line 22 of Fig. 1,some parts being in elevation; Fig. 7 is a section on line 7T of Fig.6,showing the cam-mechanism for operating the locking devices; Fig. 8 isan enlarged detail,being a section on line 88 of Fig. 6; Fig. 9 is apartial side elevation of the plunger; Fig. 10 is a central verticalsection of a part of the plunger, also taken on line 2-2 of Fig. 1; Fig.11 is a plan view of the loeking-block,the operating-rod thereof beingin section, and Fig. 12 is a perspective view of the locking block.

Referring to the d awings,11 indicates the base of the chair, whichcontains the mechanism for raising and lowering the plunger 12 whichcarries the chair-seat.

The general construction of the base, so far as it relates to themechanism for vertically adjusting the plunger, is substantially likethat shown in patent to Anton J. Rollert No. 598,877, dated February 8,1898,- in which the plunger is operated by hydraulic mechanism.

As illustrated in Fig. 1, there is a central cylindrical chamber 13, inwhich the plunger [its closely, and a second chamber 14 at one side ofsaid intermediate chamber, which communicates therewith by a port 15. Acheck-valve 16 prevents the return of the fluid-preferably oil-from thechamber 13 to the chamber l-it except when said checkvalve is depressedby means of a piston-valve 17 carried at the lower end of a valve-stem18. The valvestem 18 is connected at its upper end to a erosshead 19,suitably mounted on truunions at the upper portion of the base 11 andconnected by a eonnectingrod 20 with a foot-lever 21. The arrangement issuch that by ope 'ating the lever 21 by short strokes oil is forced fromthe chamber 14lpast valve 16, through port 15 to chamber 13,-therebyforcing the plunger up in said chamber. To lower the plunger the lever21 is depressed to its fullest extent,- thereby moving the piston-valve17 down until it engages the valve 10 and moves it off its seat;whereupon the oil in the chamber 13 is forced by the weight of theplunger back into the chamber 14. This construetion is fully illustratedand described in the Roller-t patent above referred to, and consequentlyfurther description thereof at this time is believed to be unnecessary.

22 indicates the chair-seat, which, as shown in Figs. 1 and 2, ismounted on a frame 23 at the upper end of the plunger. 24; indicates thefoot-rest, which, as shown in Figs. 1. and 4t, is provided withupwardly-extend ing side-bars 25 at opposite sides thereof, said barsbeing pivotally connected to the front of the seat-frame 2G by pivots27, best shown in Fig. l. The upper ends of the bars 25 are connected bypivots 28 with the arms 29 through short straps 30 which proj ectforward from the arms 29, as shown in Fig. 1. The rear ends of the arms29 are connected by straps 31' to the back-frame 32 by means of pivots33. The back-frame 32 is pivotally connected at its lower end to therear portion of the seat-frame 26 by pivots 34, shown in dotted lines inFig. 1. By this construction the back, arms, and foot-rest swingtogether,that is to say, when the foot-rest is thrown forward intoreclining position, the back-frame is thrown backward and the arms 29descend. Reverse movement of the foot-rest raises the back to a morenearly vertical position, and corre spondingly elevates the arms. Itwill be evident, therefore, that by controlling the position of thefoot-rest, the position of the other parts may also be controlled.

' For controlling the position of the footrest a rack-bar 35 isprovided, pivotally connected at its lower end with the foot-rest 24,preferably by means of a bracket 36, as shown in Fig. l. The teeth 37 ofthe rack bar 35 are on the lower edge thereof, and said rack-barprojects across a rock-shaft 38, best shown in Figs. 1 and 6.Preferably, as shown in Fig. 6, that portion of the rockshaft 38 whichlies under the rack-bar 35 is reduced, as shown at 39,thereby admittingof the use of smaller teeth, and securing finer adjustment. Normally therack-bar 35 rests upon the shaft 38,thereby holding the foot-rest andthe parts connected therewith in a fixed position. By raising therack-bar 35 out of engagement with the shaft 38, however, the parts arereleased, and may be adjusted at pleasure. For thus raising therack-bar, the shaft 38 is provided with a crank-arm 40 which extendsunder a marginal flange 41 carried by the rack-bar 35, as shown in Figs.6 and 8. Accordingly, by rocking the shaft 38, the arm 40, through itsengagement with the flange 41, operates to lift the rack-bar 35 out ofengagement with the shaft 38. The arm 40 may be adjusted upon the shaft38, and is held in position by a set-screw 42, shown in Figs. 6 and 8.43 indicates a spring, secured to the seat-frame 26 and engaging theupper surface of the rack-bar 35, so that it operates to hold therack-bar down in operative position. The shaft 38 is rocked by means ofa lever 44, which projects up at one side of the chair, as shown in Fig.2, and is preferably formed integral with said shaft.

The plunger 12 normally is free to rotate in the chamber 13,resting onthe body of oil therein; but it may be locked against rotation by meansof a locking-block 45 mounted in a recess 46 in one side of the plungerand adapted to engage the inner wall of the chamber in which the plungermoves. As best shown in Figs. 6 and 9, the sides of the recess 46 areinclined downward and inward, as shown at 47, and the block 45 isprovided with correspondingly-inclined end-portions 48, as shown inFigs. 6 and 11. Accordingly, when the block 45 moves upward in therecess 46, it is forced outward into frictional. engagement with theinner wall of the plunger-chamber, and by its engagement there withoperates to prevent rotation of the plunger. Said block is carried atthe lower end of an operating-rod 49, which, at its lower end, isscrewed into the block 45, and at its upper end is screwed into anadjusting nut 50,the latter being mounted in a suitable recess in thedownwardly-projecting portion 51 of a collar 52 mounted on a cam-sleeve53, as best shown in Figs. 6 and 7. The sleeve 53 is mounted upon andsecured to the shaft 38, preferably by means of a set-screw 54, as shownin Fig. 6, and is provided with two projections 5556, best shown in Fig.7. The projection 55 lies above a projection 57 carried by the collar52, which serves as a stop to limit movement of the sleeve 53 and shaft38 in one direction. The other projection 56 normally moves in adepressed portion 58 of the collar 52, but is adapted, when moved farenough to the right, as shown in Fig. 7, to ride up on an elevatedportion 59 of said sleeve,thereby depressing said sleeve, and with itthe operating-rod 49 and locking-block 45. When the shaft 38 is rockedin the opposite direction, that is to say, in the direction indicat-edby the arrow in Fig. 7 the projection 55 engages the upper inner surfaceof the collar 52,thereby raising said collar, and with it thelocking-block 45, which is accordingly projected beyond the surface ofthe plunger 12 into engagement with the inner wall of the chamber 13,thereby look ing the plunger against rotation.

It will be observed from a comparison of Figs. 7 and 8 that thedirection in which the shaft 38 is rotated to lock the plunger againstrotation is the same as that in which it is rotated to unlock thefoot-rest and connected parts. It follows that the movement of the lever44 in one direction releases the footrest and connected parts to permitof their adjustment while the chair is still locked against rotation,and that upon the movement of the lever in the opposite direction thefoot-rest and connected parts are locked against adjustment while thechair is free to rotate. hen the lever is in its intermediate position,the chair is locked both against rotation and against adjustment of thefoot-rest.

It will be observed from an inspection of Fig. 6 that when thelocking-block 45 is in locking-position it projects beyond the surfaceof the plunger 12, and the extent to which it projects may be varied byadjusting the operating-rod 49 through the nut 50, since the extent towhich said block 45 is raised upon the inclined surfaces 47 of theplunger may be controlled by vertically adjusting the operating-rod bymeans or said nut.

In order to prevent the plunger from being accidentally forced out ofthe chamber 13, we provide the plunger with an annular groove 60, thelower margin of which is perpendicular or otherwise suitably arranged toform a shoulder, as shown at (Bl-in Fig. 9, while its upper margin isbeveled, as shown at 62 in said figure. A locking-pin 63 fitted in theupper portion of the base, as shown in Fig. 3, and is adapted to entersaid groove when the plunger rises to a sullicient height. Inasmuch asthe lower margin of the groove is perpendicular, as above stated, thepin 63, when in said groove, prevents further upward movement of theplunger. Downward movement thereof, however, is permitted, since thebeveled margin (32 of said groove acts to force the pin 63 back into itsrecess. A spring 64 is provided for pressing the pin 63 inward againstthe plunger 12, as shown in Fig. 5.

That which We claim as our invention and desire to secure by LettersPatent is,-

1. In a chair, the combination of a base, a hydraulic chamber therein, aplunger mounted in said chamber, means for moving said plungervertically in said chamber, a seati'rame mounted on said plunger, alockingblock carried by said plunge and having inclined bearingstherein, whereby vertical movement of said block operates to move saidblock toward and from the wall of said chamber, an operating-rodconnected at its lower end with said block, a rock-shaft, a collarmounted thereon, cam-mechanism adapted by the rocking of said.rock-shaft to reciprocate said collar, and an adj usting-nut mounted ina recess in said collar, said adjusting-nut being screw-threaded uponthe upper end of said operating-rod.

2. In a chair, the combination of a base, a hydraulic chamber therein, aplunger mounted in said chamber, means for moving said plungervertically in said chamber, a seati'rame mounted on said plunger, alockingblock carried by said plunger and having inclined bearingstherein, whereby vertical movement of said block operates to move saidblock toward and from the wall of said chamber, an operating-rodconnected with said block and mounted in said plunger, a

rock-shaft, a sleeve mounted on said rockshat't, said sleeve having aplurality of projections, and a collar mounted on said sleeve, saidcollar being connected with said operating-rod and being arranged toreciprocate by the rocking of said sleeve, substantially as described.

3. In a chair, the combination of a base, a hydraulic chamber therein, aplunger mounted in said chamber, means for moving said plungervertically in said chamber, a seatframe mounted on said plunger, alockingblock carried by said plunger and having inclined bearingstherein, whereby vertical movement of said block operates to move saidblock toward and from the wall of said chamber, an operating-rodconnected with said block and mounted in said plunger, a rock-shaft, asleeve mounted on said rockshaft, said sleeve having a plurality ofprojections, a collar mounted on said sleeve, said collar beingconnected with said operatingrod and being arranged to reciprocate bythe rocking of said sleeve, and means between said collar and saidoperating-rod for adjusting said parts relatively to one another,substantially as described.

4. In a chair, the combination of a base having a plunger-chamber, aplunger mounted in said chamber, hydraulic-mechanism for verticallyadjusting said plunger, said plunger having an annular groove, the lowernuirgin of which forms a shoulder and a pin carried by the base andadapted to project into said groove and engage said shoulder when theplunger rises to a certain point, substantially as described.

5. In a chair, the combination of a base having a plunger-chamber, aplunger mounted in said chamber, hydraulic-mechanism for verticallyadjusting said plunger, said plunger having an annular groove, the uppermargin of said groove being beveled and the lower margin thereof beingshouldered, a pin carried by the base and adapted to project into saidgroove and engage said shoulder when the plunger rises to a certainpoint, and a spring for pressing said pin against said plunger,substantially as described.

CHARLES \V. FISCHER. CHARLES ZIMMERMAN. Witnesses Roar. T. Koons, P. A.SELIG.

